bevel Modifier causing troubles
There's a face that has 2 cuts across, while the neighboring face has none. 
1. Make sure there isn't a hole in your mesh at that point by moving any of the 2 left vertices right next to the hole.
2. I would strongly suggest to add 2 loop cuts to the left of the object as well. 

One of those is causing your indent. (Unless I looked at the wrong portion of your screenshot, marking the problematic area somehow might help)